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chemical zeolite 5a molecular sieve desiccant adsorbent for psa hydrogen concentrator
Chemxin Molecular Sieve type 5A is an alkali aluminosilicate; it is the calcium form of the Type A crystal structure. Type 5A has an effective pore opening of 5 angstroms (0.5 nm). It will adsorb molecules with a kinetic diameter of less than 5 Angstrom and exclude those larger. It is especially suitable for PSA adsorption applications where it may be used for the separation of normal- and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators.
Technical Parameter:
| Model | 5A | |||
| Color | Light gray | |||
| Nominal pore diameter | 5 angstroms | |||
| Shape | Sphere | Pellet | ||
| Diameter (mm) | 1.7-2.5(8*12 mesh) | 3.0-5.0(4*8 mesh) | 1.6(1/16 inch) | 3.2(1/8 inch) |
| Size ratio up to grade (%) | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density (g/ml) | ≥0.70 | ≥0.70 | ≥0.68 | ≥0.68 |
| Wear ratio (%) | ≤0.20 | ≤0.20 | ≤0.40 | ≤0.40 |
| Crushing strength (N) | ≥35/piece | ≥85/piece | ≥30/piece | ≥75/piece |
| Static H2O adsorption (%) | ≥21 | ≥21 | ≥21 | ≥21 |
| Static Hexane adsorption (‰) | ≥12 | ≥12 | ≥12 | ≥12 |
| Water content (%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Typical Chemical Formula | 0.7CaO . 0.3Na2O . Al2O3 . 2SiO2 . 4.5H2O SiO2 : Al2O3 ≈2 | |||
| Typical Application | a) The strong ionic forces of the divalent calcium ion makes it an excellent adsorbent to remove water, CO2, H2S form sour natural gas streams, while mini missing COS formation. Light mercaptans are also adsbored. b) Separation of normal-and iso paraffin's | |||
Regeneration:
Chemxin molecular sieve Type 5A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.
To remove moisture from a 5A molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -60°C, or mercaptan or CO2 below 2 ppm.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
Size:
5A - Zeolites are available in beads of 1-2 mm(10x18 mesh), 2-3 mm(8x12 mesh), 2.5-5 mm(4x8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.
Attention:
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.
chemical zeolite 5a molecular sieve desiccant adsorbent for psa hydrogen concentrator
Chemxin Molecular Sieve type 5A is an alkali aluminosilicate; it is the calcium form of the Type A crystal structure. Type 5A has an effective pore opening of 5 angstroms (0.5 nm). It will adsorb molecules with a kinetic diameter of less than 5 Angstrom and exclude those larger. It is especially suitable for PSA adsorption applications where it may be used for the separation of normal- and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators.
Technical Parameter:
| Model | 5A | |||
| Color | Light gray | |||
| Nominal pore diameter | 5 angstroms | |||
| Shape | Sphere | Pellet | ||
| Diameter (mm) | 1.7-2.5(8*12 mesh) | 3.0-5.0(4*8 mesh) | 1.6(1/16 inch) | 3.2(1/8 inch) |
| Size ratio up to grade (%) | ≥98 | ≥98 | ≥96 | ≥96 |
| Bulk density (g/ml) | ≥0.70 | ≥0.70 | ≥0.68 | ≥0.68 |
| Wear ratio (%) | ≤0.20 | ≤0.20 | ≤0.40 | ≤0.40 |
| Crushing strength (N) | ≥35/piece | ≥85/piece | ≥30/piece | ≥75/piece |
| Static H2O adsorption (%) | ≥21 | ≥21 | ≥21 | ≥21 |
| Static Hexane adsorption (‰) | ≥12 | ≥12 | ≥12 | ≥12 |
| Water content (%) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
| Typical Chemical Formula | 0.7CaO . 0.3Na2O . Al2O3 . 2SiO2 . 4.5H2O SiO2 : Al2O3 ≈2 | |||
| Typical Application | a) The strong ionic forces of the divalent calcium ion makes it an excellent adsorbent to remove water, CO2, H2S form sour natural gas streams, while mini missing COS formation. Light mercaptans are also adsbored. b) Separation of normal-and iso paraffin's | |||
Regeneration:
Chemxin molecular sieve Type 5A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes.
To remove moisture from a 5A molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -60°C, or mercaptan or CO2 below 2 ppm.
The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
Size:
5A - Zeolites are available in beads of 1-2 mm(10x18 mesh), 2-3 mm(8x12 mesh), 2.5-5 mm(4x8 mesh) and as powder, and in pellet 1.6mm, 3.2mm.
Attention:
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.
